Maytag MGD5800TW0 Dryer — Common Problems and What Parts Fix Them
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Understanding the Problem
Overview: The Maytag MGD5800TW0 is a gas dryer. The most common problems owners see are: no heat or low heat, dryer won't start or tumbles without heating, excessive noise, and long drying times. Below are targeted diagnostics and step-by-step repair instructions for those common issues. Note: part numbers can vary by production run — always verify the correct part for your exact model before ordering. 1) Symptom: Dryer runs but produces no heat - Step 1: Confirm basic items: make sure the dryer is on a gas supply (gas turned on) and the vent/lint screen is clean. Restricted venting can mimic heating problems. - Step 2: Check the lint screen and vent: remove lint screen and vacuum lint from opening; disconnect the exhaust hose and verify airflow when running (carefully) — poor airflow can trip thermal protection and stop heating. - Step 3: Test the thermal fuse: unplug the dryer. Locate the thermal fuse (usually on the blower housing/exhaust duct). Remove the wires and test for continuity with a multimeter. If open, replace the thermal fuse. Also clear the lint/vent restriction that likely caused it to blow. - Step 4: Check the igniter: with power and gas restored, start a cycle and watch the burner assembly (or carefully observe through a service port). If the igniter doesn't glow at all, the igniter is likely bad. Alternatively, unplug and ohm-test the igniter — a broken filament shows infinite resistance. Replace if faulty. - Step 5: Check gas valve solenoid coils: if the igniter glows but the gas doesn't open, the gas valve coils (solenoids) may have failed. With power off, remove the coils and test each coil for continuity. Replace the coil kit if any are open or out of spec. - Step 6: Check safety thermostats and high-limit thermostat: test for continuity. Replace if open. - Repair tips: Replace the failed part (thermal fuse, igniter, gas valve coil kit, thermostat) and reassemble. Run a short cycle to confirm the burner lights and heat runs normally. 2) Symptom: Dryer won't start or only hums - Step 1: Confirm power: ensure the dryer is getting 120V (dryer motor uses 120V even for gas models). Check the plug and household breaker. - Step 2: Door switch: test the door switch for continuity when door is closed. Replace if faulty. - Step 3: Start switch or motor issues: if you hear a hum but drum doesn't turn, check the belt (broken belt is a common cause), the idler pulley, and drum rollers. Remove the front panel to inspect the belt. Replace the belt if broken and inspect motor for seized bearings; test motor windings for continuity. - Step 4: Thermal fuse: an open thermal fuse can also prevent the dryer from starting. Test and replace if open. 3) Symptom: Dryer is noisy or squeals - Step 1: Inspect drum rollers and glides: remove the front and possibly the dryer drum and manually spin the drum to feel for roughness. Worn rollers or glides will cause squeal/rumble. - Step 2: Check idler pulley and bearings: a noisy idler or seized pulley makes noise and should be replaced. - Step 3: Inspect drum belt and motor bearings: a frayed belt or worn motor bearings will cause noise and should be replaced. 4) Symptom: Takes too long to dry - Step 1: Clean lint screen and vent thoroughly. Check dryer vent length and bends — long or crushed ducts reduce airflow and greatly increase dry time. - Step 2: Confirm heating elements: run a cycle and confirm the burner cycles on and off appropriately. Replace failing thermostats, igniter, or coils if they cause intermittent heat. Basic replacement procedure (thermal fuse / igniter / coil kit / belt / roller): - Step A: Unplug the dryer and shut off the gas supply (use the gas shutoff valve behind the dryer). Safety first. - Step B: Move the dryer away from the wall and remove the rear panel (or front panel depending on part location). Keep track of screws. - Step C: Locate the failed part (thermostat/thermal fuse on blower housing, igniter on burner tube, gas coils on gas valve at burner). Take a photo for reference before disconnecting wires. - Step D: Carefully disconnect wires (use needle-nose pliers and note wire locations), remove mounting screws/clips, and replace with the exact replacement part. - Step E: Reconnect wires, reassemble panels, restore power and gas, then run a test cycle and observe for proper operation and no gas smell. If you smell gas at any time, stop, turn off gas and power, ventilate, and contact a qualified technician. Safety note: Working on a gas dryer requires turning off gas and power. If you are not comfortable working with gas connections or the internal burner assembly, hire a qualified technician. Always verify no gas leaks after repair.
Common Symptoms
No heat or low heat; dryer runs but won't start; noisy operation (squeal or rumble); long drying times.
Common Causes
- Blown thermal fuse or tripped high-limit thermostat due to blocked venting
- Failed igniter or gas valve solenoid coils (no flame)
- Worn drum rollers, belt, or idler pulley (noisy or no tumble)
Popular Parts That Fix This Problem
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Helpful Repair Tip
Use a multimeter: check continuity on the thermal fuse (should be closed), the igniter (should show resistance — not open), and each gas valve coil (should show continuity). For heat problems, isolate whether the igniter glows; if it glows but no flame, suspect the gas valve coils.
Frequently Asked Questions
My MGD5800TW0 tumbles but no heat — what's the first thing I should check?
First check the lint screen and the entire vent path for blockage. Restricted airflow is the most common cause that leads to blown thermal fuses and no-heat conditions. Clean the lint and vent and then test the dryer. If vents are clear, test the thermal fuse for continuity and then the igniter and gas valve coils.
Can I replace the gas valve coils or igniter myself?
Yes — if you are comfortable working on appliances and follow safety steps: disconnect power and shut off gas before starting. Replace the coils or igniter with the exact part for your model and reassemble. However, if you are unsure about gas connections or detecting gas leaks, hire a qualified technician to avoid safety risks.
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